Callum produced "Restoran" for Indonesian artist Pertunjukan, a track that blends live instrumentation with synth elements, drawing inspiration from LANY and The 1975. The song was produced remotely from a North London studio, carefully layering organic and electronic elements to create a modern yet atmospheric sound.

Following its release, "Restoran" gained over 500,000 streams and resonated strongly with listeners, leading to a surge in engagement across TikTok and other social media platforms. The track sparked a trend, with fans using it in their own content, further boosting its reach.